It's the beginning of the season here in the NE, and twice now I've seen this issue:
One of the clubs had all of their matches, even their 1st Grand-Prix event, on days when other clubs are having matches. The second one was having their second match on Sunday of the next month and I saw it was on the same day as TWO matches close to them -- and Saturday had ZERO matches. You could potentially have a great turnout if you are that close as people might choose to go to both since they are that close to the other one.
The problem in our sport is that if you have 20 people attending matches in an area then to have 2 or three in the same vicinity waters down the pool. The potential of having a handful of shooters turn out is devastating and NO-ONE likes that.
This is especially true for clubs that are just starting out and trying to increase the numbers. Give your match the best chance possible by choosing days that don't have other local matches.
From my perspective, I'd rather spend a weekend having my own "grand-prix" two day event by traveling to two matches than going to a single match only to find out the majority of shooters went to the "other" match.